Blowpipe apparatus.



PATENTED DEC. 25, 1906.

LBERG.. BLOWPIP E APPARATUS.

APPLICATION FILED 0013.27. 19047 Inf/em C0 Jah/36W,

UNITED sTaTns PATENT OFFICE.

JOHN BERG, OF CHICAGO, ILLINOIS, ASSIGNOR TO LLOYD YV. GOLDER, OFCHICAGO. ILLINOIS.

BLOWPIPE APPARATUS.

Specication of Letters Patent.

Patented Dec. 25, 1906.

To all whom, it may concern:

Be it known that I, JOHN BERG, a citizen of the United States, residingat Chicago, in the county of Cook and State of Illinois, have invented anew and useful Improvement in Blowpipe Apparatus, of which thefollowing` is a specification.

My invention relates particularly to blowpipe apparatus adapted to theuse of gasolene or other volatile oil asa fuel.

My primary object is to provide an improved carbureter having thecharacteristics of absolute safety, exceeding neatness and reasonablecheapness, and capable of prolonged and sustained production of amixture of unvarying quality always adapted to perfect combustion.

A further object is the provision of improved means for regulating theblowpipeflame, whereby the flame may be varied gradually or instantlyfrom the finest needlepoint to the usual brush-flame.

The invention is illustrated in its perferred embodiment in theaccompanying drawings, in which- Figure l represents my improvedblowpipe apparatus, the carbureter being shown in section; Fig. 2, asectional view of the compound blowpipe employed 5 Fig. 3, an enlargedbroken section taken as indicated at line 3 of Fig. l and illustrating adetail of a valve employed with the end piece of the blowpipe; Fig. 4,an enlarged broken section taken as indicated at line 4 of Fig. l,showing a detail of the valve serving to regulate the admixture of airand oil vapor to insure perfect combustion 5 and Fig. 5, a perspectiveview of a clip or rest employed in connection with the handpiece of theblowpipe and serving to support the same with the tip upturned whendesired.

In the construction shown A represents the carbureter, and B theblowpipe.

The carbureter comprises a glass jar a of substantially uniform diameterand having an open upper end closed by a metallic top c',- a nipple a2having threaded connection with the upper portion of the top a andequipped within the vessel with a depending air-pipe a3; a pair ofperforate disks or plates a4 a5 equipped, respectively, withtube-sections a (L7, which telescope with each other; a filling ofabsorbent material as, conned between said plates, and a valve c,located within the tube a3 and equipped with a stem extending upwardlythrough the nipple a2 and provided thereabove with an adj usting-knobalo. The nipple a2 is provided with a passage through which air isadmitted to the tube a3 and is equipped with a laterally-extending tubea.11 to which is attached a hose 0,12, which may be connected with anair-pump, a foot-bellows, or other source of compressed-air supply. Thetop a comprises a neck portion cl3, having its lower end cemented orotherwise joined to the upper end of the bottle and its upper endcontracted, and a cap portion @14 of relatively small diameter, which isbrazed, soldered, or otherwise joined to the upturned flange of the neckportion. Obviously the two parts 0,13 a may be integrally formed by theuse of suitable dies. The neck portion cl3 is equipped with a removableplug (L15, whereat gasolene may be introduced. The cap portion a isprovided internally at its upper portion with a depending sleeve whichis internally threaded to receive a threaded portion of the nipple a2.Beneath this point of connection the nipple a2 has a threaded extensional, with which the upper end of the tube a3 has threaded connection. Thestem of the valve a9 passes upwardly freely through the vertical portionof the air-admission channel in the nipple a2 and extends through aclosely-fitting perforation above said channel, the knob am beingscrewed upon the upper end of the stem. The knob is so firmly connectedwith the stem that it will serve as a medium Jfor rotating the valve ineither direction. The cap portion (L14 is equipped with adjacentoutlet-nipples L17 als, with which are connected the rubber tubesleading to the blowpipe. A nipple al is also provided, and this nipplemay be provided with a valve, (not shown,) enabling gas to pass to anyother burner. (Not shown.)

The plates a c5 preferably fit accurately within the jar, which usuallyis of circular cross-section, and the telescopic connection of thetube-sections a al enables a desirable degree of compression of theabsorbent material to be secured. The tube a3 is equip ed near its lowerend with an external colar ago, between which and the plate L4 isconfined gasket a". The lower end. of the tube a3 fits within the upperend of the tube c6. The disk a5 is 'fitted onto the lower end of thetube a7, being raised slightly above the lower IOO end thereof, and isthen soldered in place. The extreme lower end of the tube a7 is notchedor cut away, so that air can pass freely beneath the disk a5.

In manufacturing the carbureter the disks with the requisite amount ofabsorbent material are first introduced into the jar, and the top (L13is then secured in place,'the joint being hermetically sealed. Thenipple a2, the tube a, and the valve (t9 are then assembled, and thetube ai is then passed through the opening in the cap (L14, thewasher@21 being iirst put in place, and when the nipple (L2 is screweddown the disk a4 is forced downwardly, thereby compressing the absorbentmaterial. rlhe resiliency of the absorbent material is sufficient toform a close joint at the gasket (L21. It will be seen, therefore, thatthe air is forced to follow a course downwardly to the bottom of thecarbureter and then upwardly 4through the absorbent material into whatmay be termed the `"mixture-chamber above the plate a4. The tube a isprovided above the disk (L4 with perforations (L22, guarded by the valve(L9. It will be understood that the valve a may be adjusted. to regulatethe mixture of air and oil vapor, so that correct proportions forcomplete combustion may be maintained at all times. In practice thecarbureter is charged with sufficient oil to completely saturate theabsorbent material and no more. Extensive operation of the improvedcarbureter has demonstrated that not only has economy of operation beenobtained by means of the new construction, but a uniform quality ofvapor can be produced and sustained during practically the whole periodof operation from a given charge of oil. In this respect the improvedgeneratordiffers from generators in which free gasolene is employed, ithaving been demonstrated that the oil is not impoverished during thefirst ortion of the operation of the device immediately following thecharging of the carbureter. Moreover, absolute safety is attained, itbeing possible to invert the generator during operation without theslightest detriment.

The general construction of the blowpipe B is now well understood in theart. It comprises a relatively large tube b and a relatively small tubeb, combined in the manner illustrated in Patent No. 586,066, grantedtoValter Sams, July 6, 1897, and equipped with a burner b2 of the kindshown in said patent. As shown, the burner end of the pipe l) is bent atan angle, and the burner end of the pipe b passes within the pipe b.Back of the point of junction between said pipes I provide an improvedvalve b3, which is connected with the pipe b.' The valve b3 comprises atubular casing b", which passes through a perforation in the pipe b andhas solder connection with the walls of said perforation. The lowerl endof this casing is closed, and the upper end has screwed thereon a capb5. The inner surface' of the' casing tapers, and the casing receives atapered plug valve b, the stem of which passes through the cap b5, beingequipped externally with a crescent-shaped operating-handle- 67.Encircling the stem within the casing is a spring which tends tomaintain a close joint between the valve and its casing. The valve isprovided with a perforation bs and with a circumferential groove b9. Thecasing is provided within the pipe b with alined perforations blo, whichregister with the groove b9'. The valve may be turned to bring theperforation bs into registration with the perforations blo. As long asgas is generated it will pass freely through the small tube b', therebymaintaining the needle-point flame, and some gas will also pass throughthe groove b andv reach the liamey through the pipe b. The handle of thevalve is well adapted to enable the valve to be turned by the thumbwhile the operator is working with the blowpipe. The valve may beturnedto bring the perforation 58 gradually into registration with theperforations bm, or the valve may be given an instantaneous turn, sothat the size of the' Hame may be regulated at will without the work ofthe operator being interrupted.

As shown, the pipe b forms a loop with the pipe l) near the bends in thepipes, and I have provided a sheet-metal clip c, adapted to be sprunginto place between the pipes and to serve as a rest for supporting theblowpi-pe when the operator desires to lay the pi-pe down. This clip hasa curved back c/ adapted to engage the pipe b and converging limbs c2,whose extremities are adapted to er1-gage the pipe b. The curved backserves the purpose of enabling the angles c3 to project somewhat beyondthe outer or convex surface of the pipe b, so that the angles virtuallyserve as feet for supporting the blowpipe'.

Many features of advantage not enumerated above may be attributed tothe' improved carbureter, and these advantages will be at onceappreciated by those skilled in the art.

Changes in details of construction within the spirit of my invention maybe made. Hence no undue limitation should be understood from theforegoing detailed description.

/Vhat I regard as new, and desire to secure by Letters Patent, is-' 1.In a carbureter', the combination of a receptacle, an air-pipe extendinginto said re'- ceptacle and equipped with means for directing a portionof the air through the liquid and provided above the liquid-level withan opening, and a valve guarding said opening and provided with externaladjusting means, for the purpose set forth.

lOIO

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2. In a carbureter, the combination of a receptacle provided with asuitable top, a nipple connected with said top and provided with anair-passage and a laterally-extending tube connected with said passage,a tube depending from said nipple into said chamber and having outletsinto the chamber located at different levels, and a valve guarding oneoutlet and provided with a stem projecting above said nipple, andequipped at its upper end with operating means,for the purpose setforth.

3. In a carbureter, the combination of a receptacle, an air-pipeextending into said receptacle and equipped at its lower portion withmeans for directing the main portion of the air through the gasolene andprovided at a higher level with an opening, a nipple connected with thetop of the generator and having a laterally-extending tube, a valvewithin said first-named tube provided with a stem j ournaled in saidnipple and extending freely through the air-passage of the nipple, andexternal adjusting means connected with the upper end of said stem, forthe purpose set forth.

4. In a carbureter, the combination of a vessel of substantially uniforminternal diameter, a pair of perforate disks therein equipped withtelescoping tubes, absorbent material between said disks, a top for saidvessel, and an air-tube connected therewith and joined to and serving todepress the upper disk, for the purpose set forth.

5. In a carbureter, the combination of a receptacle, two perforatemembers therein having telescopic tubular connection, absorbent materialconfined between said members, a top for the vessel, an air-supply tubeconnected with said top and having a collar bearing upon the upper oneof said perforate members, and an outlet connected with said top, forthe purpose set forth.

6. The combination of a jar, a compressible pad of absorbent materialwith an extensible tubular passage through the same, a top for the jar,and a tube connected with said top and telescopically joined with thepassage in said pad and having a flange bearing upon the pad, for thepurpose set forth.

7. In a carbureter, the combination of a jar, a lower perforate disksupported above the bottom of the jar and equipped with anupwardly-extending tube, an upper perforate disk equipped with adownwardly-extending tube telescoping with said first-named tube,interposed absorbent material, a top for said jar provided with anoutlet, an inlet-tube clonnected with said top and the tube of saidupper disk and equipped with an external collar, and a gasket confinedbetween said collar and said upper disk, for the purpose set forth.

S. In a carbureter, the combination of a jar of uniform internaldiameter, a top cemented thereon and equipped with a removable plug andprovided with an outlet-passage, an absorbent pad having a centralvertical passage, and an air-inlet pipe having threaded connection withthe upper central portion of said top, and having, as its onlyconnection at the lower end, slip-joint connection, with the passage insaid pad whereby the tube may be removed without removal of the top,substantially as and for the purpose set forth.

E). In a carbureter, the combination of a receptacle, an air-pipedepending into said receptacle and having outlets into the receptaclelocated at different levels, a valve guarding one outlet and having astem extending longitudinally of said air-pipe, and external adjustingmeans connected with the valvestem, for the purpose set forth.

JOHN BERG.

In presence of- I/V. B. DAVIES. E. P. Rien.

